Keto Roasted Spaghetti Squash with Alfredo Sauce Recipe
A luxuriously creamy, low-carb comfort dish that’s ready in under an hour.
KEY INFO:
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
- Servings: 4
- Calories: 425 per serving
- Fat: 38g
- Protein: 12g
- Carbs: 8g (Net: 6g)
- Difficulty: Easy
- Dietary: Keto, Gluten-free, Vegetarian-optional
EQUIPMENT NEEDED:
- Large baking sheet
- Sharp chef’s knife
- Fork
- Large skillet
- Whisk
- Measuring cups and spoons
Alternative tools:
- Rimmed cookie sheet (instead of baking sheet)
- Regular dinner fork (instead of whisk)
INGREDIENTS:
For the Squash:
- 1 medium spaghetti squash (≈3 lbs/1.4 kg)
- 2 tbsp olive oil (30ml)
- 1/2 tsp salt (2.5g)
- 1/4 tsp black pepper (1g)
For the Alfredo Sauce:
- 1 cup heavy cream (240ml)
- 1/2 cup unsalted butter (113g)
- 2 cloves garlic, minced (≈6g)
- 1 cup freshly grated Parmesan (100g) [Pre-grated won’t melt properly]
- 1/4 tsp ground nutmeg (1g)
- Salt and pepper to taste
Optional Garnish:
- Fresh parsley, chopped
- Extra Parmesan for serving
METHOD:
- Preheat oven to 400°F (200°C).
- Carefully cut spaghetti squash in half lengthwise. Tip: Score the skin first to guide your knife.
- Scoop out seeds using a spoon.
- Brush cut sides with olive oil and season with salt and pepper.
- Place squash cut-side DOWN on baking sheet.
- Roast for 35-45 minutes until fork-tender. The skin should give slightly when pressed.
While squash roasts, make the sauce:
- Melt butter in skillet over medium heat.
- Add garlic, cook for 1 minute until fragrant.
- Pour in cream, bring to gentle simmer.
- Whisk in Parmesan until smooth.
- Season with nutmeg, salt, and pepper.
- Using a fork, scrape squash into spaghetti-like strands.
- Toss strands with hot Alfredo sauce.
CRUCIAL TIPS:
- Choose a squash that feels heavy for its size.
- Don’t overcook – you want strands, not mush.
- Sauce too thick? Thin with warm cream.
- Always use freshly grated Parmesan.
STORAGE & SCALING:
- Keeps 3 days refrigerated.
- Reheat gently to prevent sauce separation.
- Recipe doubles easily for crowds.
- Squash and sauce can be prepared separately.
VARIATIONS:
- Add grilled chicken or shrimp.
- Stir in sautéed mushrooms.
- Mix in wilted spinach.
- Spice it up with red pepper flakes.
COMMON MISTAKES:
- Using pre-grated cheese (it won’t melt properly).
- Overcooking the squash.
- Boiling rather than simmering the sauce.
- Not drying squash well before adding sauce.
Now you’ve got a proper keto pasta alternative that actually satisfies those Italian food cravings. The key is in the roasting – it brings out the squash’s natural sweetness while keeping the strands perfectly al dente.











